Navegando por Assunto "Sementes amazônicas"

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Acesso aberto (Open Access)
Avaliação e caracterização de sementes amazônicas para fins alimentícios
(Universidade Federal do Pará, 2018-06-18) PINHEIRO, Rutelene da Cruz; SILVA, Luiza Helena Meller da; http://lattes.cnpq.br/2311121099883170
Many products used by the society come from the Brazilian flora, such as medicines, food and its additives, fibers, natural and essential oils, cosmetics, chemicals and biofuels. Numerous classes of chemical compounds can be extracted from plant species, such as cupuassu (Theobroma grandiflorum), tucuman (Astrocaryum vulgare Mart), peach palm (Bactris gasipaes) and mammee apple (Mammea americana L.) belonging to families Malvaceae, Palmae and Clusiaceae. These fruits are well known in the Amazon region, their pulps have excellent sensorial characteristics (aroma, flavor and texture) with wide acceptance, and great potential for use in the production of varied types of food. Aiming to provide a better use of these fruits, studies about chemical and nutritional characterization were carried out from their seeds, and the viability of these seeds to obtain polysaccharides. The seeds of cupuassu, tucuman, peach palm and mammee apple showed high nutritional value due to the presence of carbohydrates, lipids, proteins, minerals, saturated and unsaturated fatty acids, essential amino acidsand phenolic compounds in different concentrations, which make of the seeds a potential byproduct to be used in food preparations, since the concentration of ant nutritional (tannins and phytates) was identified in low concentration. Regarding the extraction of polysaccharides, there was a difference in the monosaccharide composition identified in each seed, and the mammee apple seed was prominent, due to the high percentage of glucose. The seeds of tucuman and peach palm were also distinguished by the presence of mannose (M) and galactose (G) in the proportions (M / G) of 3:1 and 4:3, respectively, characterizing the possible presence of galactomannans.
Acesso aberto (Open Access)
Caracterização da gordura da amêndoa da gordura de cupuaçu (Theobroma grandiflorum S.) obtida por extração aquosa enzimática
(Universidade Federal do Pará, 2022-09-02) SILVA, Danylla Cássia Sousa; SILVA, Luiza Helena Meller da; http://lattes.cnpq.br/2311121099883170; https://orcid.org/0000-0002-6002-9425
Aqueous enzymatic extraction is considered an emerging green technique that is being extensively investigated. In this work, cellulase, pectinase and protease enzymes are used in the aqueous extraction process of cupuassu fat, aiming to obtain a higher extraction yield. Different incubation systems were tested, at a temperature of 60 °C and following extraction kinetics (2 to 8 hours). The samples that obtained the highest fat extraction efficiencies were analyzed: aqueous phase, in terms of phenolic compounds and antioxidant activity, and oily phase (fats) characterized in terms of physicochemical properties, fatty acid profile, oxidative stability, thermal and bioactive compounds. The aqueous phase showed higher concentrations of phenolic compounds and antioxidant activity when compared to the oil phase. The fat samples showed approximate contents of monounsaturated and saturated fatty acids with higher concentrations of oleic and stearic, showed good oxidative stability (about 14 h) and thermal stability (close to 406 oC) and the best yield result (80.86 %) was achieved with the protease enzyme within 6 hours of incubation. The results indicated that cupuassu fats obtained by enzymatic aqueous extraction have potential for use in the food, pharmaceutical and cosmetics sectors.